Petersburg Borough

Ecosystem Overview

The Petersburg Borough ecosystem supports 100 documented wildlife species across 88 taxonomic genera. Located in Petersburg Borough, Alaska, this area provides critical habitat with diverse natural communities. The location hosts 21 frequently observed species and 19 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife. Compared to nearby Crane Lake, Petersburg Borough hosts 0% more species diversity. This location ranks #1 for species diversity among 3 Petersburg Borough County natural areas, placing it in the 67th percentile for biodiversity.

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 3 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 3 locations

67th percentile for diversity

vs. Crane Lake

+0% species diversity

Ecosystem Overview

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Biodiversity Highlights

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Species Distribution

Very Common‌

Common‌

Occasional‌

Rare‌

Regional Context

Regional Ranking

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Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Evasterias troschelii

Very Common9 obs.

Drosera anglica

great sundew

Very Common8 obs.

Drosera rotundifolia

round-leaved sundew

Very Common8 obs.

Pycnopodia helianthoides

Sunflower Sea Star

Very Common7 obs.

Kalmia microphylla

bog-laurel

Very Common5 obs.

Urticina grebelnyi

Common5 obs.

Metridium farcimen

giant plumed anemone

Common4 obs.

Larus glaucescens

Glaucous-winged Gull

Common4 obs.

Menyanthes trifoliata

Buck-Bean

Common4 obs.

Katharina tunicata

Common3 obs.

Strongylocentrotus droebachiensis

green sea urchin

Common3 obs.

Crossaster papposus

Rose star

Occasional3 obs.

Geum calthifolium

caltha-leaved avens

Occasional3 obs.

Clangula hyemalis

long-tailed duck

Occasional3 obs.

Cyanea ferruginea

Occasional3 obs.

Coptis trifolia

Threeleaf Goldthread

Occasional3 obs.

Rhododendron groenlandicum

Labrador-Tea

Occasional3 obs.

Andromeda polifolia

bog-rosemary

Rare3 obs.

Oregonia gracilis

Rare3 obs.

Telmessus cheiragonus

helmet crab

Rare3 obs.

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Most Common Species

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Want the Complete Field Guide?

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Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Petersburg Borough. Perfect for outdoor adventures, education, and nature exploration.

$6.99

Get Your Personalized Field Guide

Download a professional PDF field guide featuring all the species found in Petersburg Borough. Perfect for outdoor adventures, education, and nature exploration.

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Regional Comparison

Regional Ranking

100

Species Count

+194%

vs. Regional Average

Compared to 2 nearby locations in Petersburg Borough County, Alaska

Nearby Natural Areas

Kuiu Island

Importance: 0.23

10 species

+900% vs. current

Mitkof Island

Importance: 0.22

57 species

+75% vs. current

About This Comparison

These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within Petersburg Borough County.

Regional Comparison

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Regional Ranking

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Species Count

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vs. Regional Average

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Nearby Natural Areas

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Regional Comparison

Regional Ranking

100

Species Count

+194%

vs. Regional Average

Compared to 2 nearby locations in Petersburg Borough County, Alaska

Nearby Natural Areas

Kuiu Island

Importance: 0.23

10 species

+900% vs. current

Mitkof Island

Importance: 0.22

57 species

+75% vs. current

About This Comparison

Ecosystem Overview

Biodiversity Highlights

100

Total Species

Documented wildlife species

Genus Diversity

Taxonomic genera represented

Common Species

Frequently observed species

Rare Species

Occasionally documented species

Regional Rank

Out of 3 locations

Species Distribution

Very Common21 species

Common30 species

Occasional30 species

Rare19 species

Regional Context

Regional Ranking

#1 of 3 locations

67th percentile for diversity

vs. Crane Lake

+0% species diversity

Most Common Species

Showing 20 most frequently observed species out of 100 total documented species.

Evasterias troschelii

Very Common9 obs.

Drosera anglica

great sundew

Very Common8 obs.

Drosera rotundifolia

round-leaved sundew

Very Common8 obs.

Pycnopodia helianthoides

Sunflower Sea Star

Very Common7 obs.

Kalmia microphylla

bog-laurel

Very Common5 obs.

Urticina grebelnyi

Common5 obs.

Metridium farcimen

giant plumed anemone

Common4 obs.

Larus glaucescens

Glaucous-winged Gull

Common4 obs.

Menyanthes trifoliata

Buck-Bean

Common4 obs.

Katharina tunicata

Common3 obs.

Strongylocentrotus droebachiensis

green sea urchin

Common3 obs.

Crossaster papposus

Rose star

Occasional3 obs.

Geum calthifolium

caltha-leaved avens

Occasional3 obs.

Clangula hyemalis

long-tailed duck

Occasional3 obs.

Cyanea ferruginea

Occasional3 obs.

Coptis trifolia

Threeleaf Goldthread

Occasional3 obs.

Rhododendron groenlandicum

Labrador-Tea

Occasional3 obs.

Andromeda polifolia

bog-rosemary

Rare3 obs.

Oregonia gracilis

Rare3 obs.

Telmessus cheiragonus

helmet crab

Rare3 obs.

Want the Complete Field Guide?

Get all 100 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.

Premium field guide includes identification tips, seasonal patterns, and professional layout optimized for field use.